It sounds like PanelMac might be encountering an issue with its startup or installation files. Here are a few things you could try to resolve the crashing issue:

Reinstall the Software: Sometimes files can become corrupted. Try uninstalling PanelMac, then reinstalling it from a fresh download.

Check for Updates: Make sure you’re using the latest version of the software. An outdated version could cause crashes, especially if there are compatibility issues with your operating system.

Compatibility Mode: If you're running the software on a newer version of macOS, try running it in compatibility mode for an earlier version (if this option is available).

Clear Preferences/Cache: Sometimes, corrupted settings or cache files can cause issues. Try clearing PanelMac's preferences or cache files (usually located in the system library or application support folder).

System Resources: Ensure that your Mac has enough available memory and processing power. Close unnecessary programs and try running PanelMac with minimal background processes.

Check Console Logs: Open the Console app on your Mac and check for any specific error messages when PanelMac crashes. These messages might help identify the root cause of the crash.